Answer:there is evidence to support
Step-by-step explanation: i just got it right
 
        
             
        
        
        
The answer is C. 89 in^2
This is found by (1/2(

))+70
r in this equation stands for radius which is half the diameter. Sice the diameter equals 7, the radius equals 3.5
You have to solve this by putting it into a calculator since you can't really solve for an equation with pi in it otherwise.
Hope this helps!
 
        
        
        
Answer:
x = 12
Step-by-step explanation:
These are vertical angles, and vertical angles are equal
7x = 8x-12
7x -8x = -12
-x = -12
x = 12